Which one of the following pairs is correctly matched
Morgan $⇒$ Discovered the process of linkage
Linus Pauling $⇒$ Isolated $DNA$ for the first time
Francis Crick $⇒$ Discovered the phenomenon of transformation
H. Khorana $⇒$ Discovered that a sequence of $3$ nucleotides codes for a single amino acid
Which one of the following pair is correctly matched
Morgan hybridised yellow-bodied, white-eyed females to brown-bodied, red-eyed males and intercrossed their $F_{1}$ progeny. He observed that
$(a)$ $F_{2}$ ratio was deviated very significantly from the $9 : 3 : 3 : 1$ ratio
$(b)$ Both genes did not segregate independently of each other
$(c)$ Recombinant types are not obtained in $F_{2}$ generation
$(d)$ Both genes segregate independently of each other
Select the correct set of statements :
Frequency of crossing over in a chromosome is an index of
The recombination frequency between the genes $a\, \& \, c$ is $5 \,\% \,, b\, \& \,c$ is $15 \,\%,\, b\, \& \,d$ is $9 \%, \,a\, \& \,b$ is $20 \%$ , $c\, \& \,d$ is $24 \%$ and $a \, \& \,d$ is $29 \%$. What will be the sequence of these genes on a linear chromosome?
Which of the following statements is not trueof two genes that show $50\%$ recombination frequency ?